gdb: add target_ops::supports_displaced_step

[deliverable/binutils-gdb.git] / gold / errors.cc

diff --git a/gold/errors.cc b/gold/errors.cc
index a7c3ad20e8e6fcf8d05069674323bd98a2bc6d87..2b022e78840ecd0c8118e465b5625ca41db17d55 100644 (file)
--- a/gold/errors.cc
+++ b/gold/errors.cc
@@ -1,6 +1,6 @@
 // errors.cc -- handle errors for gold
 
-// Copyright 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
+// Copyright (C) 2006-2020 Free Software Foundation, Inc.
 // Written by Ian Lance Taylor <iant@google.com>.
 
 // This file is part of gold.
@@ -38,8 +38,8 @@ namespace gold
 
 const int Errors::max_undefined_error_report;
 
-Errors::Errors(const char* prog_name)
-  : program_name_(prog_name), lock_(NULL), initialize_lock_(&this->lock_),
+Errors::Errors(const char* program_name)
+  : program_name_(program_name), lock_(NULL), initialize_lock_(&this->lock_),
     error_count_(0), warning_count_(0), undefined_symbols_()
 {
 }
@@ -81,7 +81,18 @@ Errors::fatal(const char* format, va_list args)
   fprintf(stderr, _("%s: fatal error: "), this->program_name_);
   vfprintf(stderr, format, args);
   fputc('\n', stderr);
-  gold_exit(false);
+  gold_exit(GOLD_ERR);
+}
+
+// Report a fallback error.
+
+void
+Errors::fallback(const char* format, va_list args)
+{
+  fprintf(stderr, _("%s: fatal error: "), this->program_name_);
+  vfprintf(stderr, format, args);
+  fputc('\n', stderr);
+  gold_exit(GOLD_FALLBACK);
 }
 
 // Report an error.
@@ -125,7 +136,7 @@ Errors::error_at_location(const Relocate_info<size, big_endian>* relinfo,
                          size_t relnum, off_t reloffset,
                          const char* format, va_list args)
 {
-  fprintf(stderr, _("%s: %s: error: "), this->program_name_,
+  fprintf(stderr, _("%s: error: "),
          relinfo->location(relnum, reloffset).c_str());
   vfprintf(stderr, format, args);
   fputc('\n', stderr);
@@ -141,7 +152,7 @@ Errors::warning_at_location(const Relocate_info<size, big_endian>* relinfo,
                            size_t relnum, off_t reloffset,
                            const char* format, va_list args)
 {
-  fprintf(stderr, _("%s: %s: warning: "), this->program_name_,
+  fprintf(stderr, _("%s: warning: "), 
          relinfo->location(relnum, reloffset).c_str());
   vfprintf(stderr, format, args);
   fputc('\n', stderr);
@@ -156,22 +167,40 @@ Errors::undefined_symbol(const Symbol* sym, const std::string& location)
 {
   bool initialized = this->initialize_lock();
   gold_assert(initialized);
+
+  const char* zmsg;
   {
     Hold_lock h(*this->lock_);
     if (++this->undefined_symbols_[sym] >= max_undefined_error_report)
       return;
-    ++this->error_count_;
+    if (parameters->options().warn_unresolved_symbols())
+      {
+       ++this->warning_count_;
+       zmsg = _("warning");
+      }
+    else
+      {
+       ++this->error_count_;
+       zmsg = _("error");
+      }
   }
+
   const char* const version = sym->version();
   if (version == NULL)
-    fprintf(stderr, _("%s: %s: error: undefined reference to '%s'\n"),
-           this->program_name_, location.c_str(),
-           sym->demangled_name().c_str());
+    fprintf(stderr, _("%s: %s: undefined reference to '%s'\n"),
+           location.c_str(), zmsg, sym->demangled_name().c_str());
   else
     fprintf(stderr,
-            _("%s: %s: error: undefined reference to '%s', version '%s'\n"),
-           this->program_name_, location.c_str(),
-           sym->demangled_name().c_str(), version);
+            _("%s: %s: undefined reference to '%s', version '%s'\n"),
+           location.c_str(), zmsg, sym->demangled_name().c_str(), version);
+
+  if (sym->is_cxx_vtable())
+    gold_info(_("%s: the vtable symbol may be undefined because "
+               "the class is missing its key function"),
+             program_name);
+  if (sym->is_placeholder())
+    gold_info(_("%s: the symbol should have been defined by a plugin"),
+             program_name);
 }
 
 // Issue a debugging message.
@@ -202,6 +231,17 @@ gold_fatal(const char* format, ...)
   va_end(args);
 }
 
+// Report a fallback error.
+
+void
+gold_fallback(const char* format, ...)
+{
+  va_list args;
+  va_start(args, format);
+  parameters->errors()->fallback(format, args);
+  va_end(args);
+}
+
 // Report an error.
 
 void